Mill Creek Residential Trust's 275-unit rental apartment building in Mineola, seen under construction on Old Country Road on Dec. 4, 2014. Photo Credit: Steve Pfost

The value of contracts for future construction in the metropolitan area rose 99 percent in June compared with a year ago on a surge in commercial activity.

Dodge Data & Analytics, an industry information service, reported contracts worth $5.6 billion for future building were awarded last month in the 23-county region that includes Long Island, up from $2.8 billion in June 2014.